321270540 has 24 divisors (see below), whose sum is σ = 899557680. Its totient is φ = 85672128.

The previous prime is 321270529. The next prime is 321270541. The reversal of 321270540 is 45072123.

It is a self number, because there is not a number n which added to its sum of digits gives 321270540.

It is not an unprimeable number, because it can be changed into a prime (321270541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2677195 + ... + 2677314.

It is an arithmetic number, because the mean of its divisors is an integer number (37481570).

Almost surely, 2^321270540 is an apocalyptic number.

321270540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

321270540 is an abundant number, since it is smaller than the sum of its proper divisors (578287140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321270540 is a wasteful number, since it uses less digits than its factorization.

321270540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5354521 (or 5354519 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 321270540 is about 17924.0213121944. The cubic root of 321270540 is about 684.8944302472.

The spelling of 321270540 in words is "three hundred twenty-one million, two hundred seventy thousand, five hundred forty".